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STUDY ON THE COLOR REACTION OF Cd(II) WITH THE NEW REAGENT 2,6- DIHYDROXYPHENYLDIAZOAMINOAZOBENZENE AND ITS APPLICATION

Yong Liu, Pan Jiao

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Abstract

The synthesis of a new reagent DHDAA and its chromogenic reaction with cadmium(Ⅱ) in the presence of Triton X 100 was studied. In a 1.0mol·L -1 ammonia solution, Cd(Ⅱ) reacts with DHDAA to form a stable red complex with molar ratio of 1∶3. The apparent molar absorptivity is 1.97×10 5L·mol -1 ·cm -1 at the maximum absorption of 520nm. Beer′s law is obeyed over the range of 0～18μg Cd(Ⅱ) in 25ml solution. The method shows higher selectivity and has been applied to determine cadmium derectly in waste water with satisfaction.

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What this paper is about

The synthesis of a new reagent DHDAA and its chromogenic reaction with cadmium(Ⅱ) in the presence of Triton X 100 was studied. In a 1.0mol·L -1 ammonia solution, Cd(Ⅱ) reacts with DHDAA to form a stable red complex with molar ratio of 1∶3. The apparent molar absorptivity is 1.97×10 5L·mol -1 ·cm -1 at the maximum absorption of 520nm. Beer′s law is obeyed over the range of 0～18μg Cd(Ⅱ) in 25ml solution. The method shows higher selectivity and has been applied to determine cadmium derectly in waste water with satisfaction.

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Available abstract

The synthesis of a new reagent DHDAA and its chromogenic reaction with cadmium(Ⅱ) in the presence of Triton X 100 was studied. In a 1.0mol·L -1 ammonia solution, Cd(Ⅱ) reacts with DHDAA to form a stable red complex with molar ratio of 1∶3. The apparent molar absorptivity is 1.97×10 5L·mol -1 ·cm -1 at the maximum absorption of 520nm. Beer′s law is obeyed over the range of 0～18μg Cd(Ⅱ) in 25ml solution. The method shows higher selectivity and has been applied to determine cadmium derectly in waste water with satisfaction.

Key concepts: Molar absorptivity, Chromogenic, Reagent, Color reaction, Chemistry, Cadmium, Selectivity, Absorption (acoustics)

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STUDY ON THE COLOR REACTION OF Cd(II) WITH THE NEW REAGENT 2,6- DIHYDROXYPHENYLDIAZOAMINOAZOBENZENE AND ITS APPLICATION — Research Paper | ScholarLens